1.You measure 25 dogs' weights, and find they have a mean weight of 73 ounces. Assume the population standard deviation is 12.2 ounces. Based on this, construct a 95% confidence interval for the true population mean dog weight.

Give your answers as decimals, to two places

_____ ____ounces

2.The effectiveness of a blood-pressure drug is being investigated. An experimenter finds that, on average, the reduction in systolic blood pressure is 74.9 for a sample of size 705 and standard deviation 14.1.

Estimate how much the drug will lower a typical patient's systolic blood pressure (using a 98% confidence level).

a tri-linear inequality accurate to one decimal place (because the sample statistics are reported accurate to one decimal place).

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obtained without any preliminary rounding.